I thought it was good. In terms of making a crossover that fits both series well, I think Scoobynatural did a bit of a better job but of course, Bravo Dooby-Doo was also awesome!
EDIT: I'm not actually a fan of Scoobynatural. I think it was too dark and violent. I just think that overall, the Scoobynatural writers did a better job adapting the characteristics of the Scooby characters even if they put them into senarios that I didn't enjoy and made them say things that felt to adult.